test: ensure hostPort routing

[jackfrancis]

Reason for Change:

Inspired by this AKS issue report, this PR brings a new E2E test that validates basic hostPort functionality:

Azure/AKS#2070

Issue Fixed:

Credit Where Due:

Does this change contain code from or inspired by another project?

• No
• Yes

If "Yes," did you notify that project's maintainers and provide attribution?

• No
• Yes

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Notes:

[acs-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jackfrancis

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [jackfrancis]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[jackfrancis]

@jchauncey @sozercan do we have a local (MCR/ACR) image that we can use for this curl test, so that we can be better internet citizens?

[sozercan]

we have mcr.microsoft.com/oss/tutum/curl:latest in MCR but it's pretty old

[jackfrancis]

I think that's a better alternative than pounding dockerhub, thanks!

[codecov]

Codecov Report

Merging #4186 (f1215a9) into master (ad20028) will increase coverage by 0.10%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4186      +/-   ##
==========================================
+ Coverage   73.27%   73.38%   +0.10%     
==========================================
  Files         135      135              
  Lines       20720    20804      +84     
==========================================
+ Hits        15183    15267      +84     
  Misses       4562     4562              
  Partials      975      975              

Impacted Files	Coverage Δ
pkg/api/k8s_versions.go	100.00% <0.00%> (ø)
pkg/api/common/versions.go	96.37% <0.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 83b3b57...f1215a9. Read the comment docs.